Skiving machine



Nov. 6, 192s; Y '1,690,595

A. R. RIDDERSTROM smi/ING MACHINE Filed Jan. 4' 1924 4" Zndrgventor l By* @rnd Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

ANDREW R.y RXDDEB'STEGM, 0F NAHANTQMSSCHUSETTS, AWGHOR, T0; BEACON yreturns MAcErNnooMPeNY, oF LYNN, MASSACHUSETTS, a GonPonATroN or MASSACHUSETTS.

sxlvrNG MAGHNE.

Application filed January 4, 1,924, Serial No. 684,437.

hereinafter.

In the accompanying drawings, Fig. 1 isl a longitudinal, central, vertical section. of a portion of a machine constructed according to a preferred embodiment of the present invention; and Figs 2, 3, 4 and 5 are sections taken upon the lines 2.-2, 3-3, 1I-.4 and -f, respectively, of Fig. 1, looking in the direction of the arrows.

The invention is for illustrative purposes shown in the accompanying drawings as einbodied in a machine having many features ijn common with a machine constituting the subject-matter of av ,copending application, Serial No. 521,239, filed December' 9, 1921. The frame of the machine is provided with an overhanging arm or head 22 that carries a. skiving knife 185 and a feed Vdisk 143. The feed disk cooperates with a feed roll 95 to feed material to the knife. A projection orv lug 26, provided with a main lwaring` 27,.r is fastened to the front end of the head 22 by screws 2S. A shaft 32 is journaled in the bearing 2.7., The feedrroll and the feed disk are driven from the shaft 32 as explained more fully in the aboveidentified application. The feed-roll driving; mechanism illustrated herein.

A The feed disk is driven from a worm-135 that is secured to the shaft 323ml that meshes with :inverni gear 136 that is keyed or bolted t0 the upper end of the feed-disk shaft 137. The shaft 137 is journaled at 13S and 139 1n an adjustable bearing` 140.

A The feeddisk 1113V nOIHlLlly presents an angular working relation with respectl to the fee-d roll 95, and the driving gearing is such that both axial and transverse movement may be had between the gears without disengagement thereof, either for adjustments or when performing work, the teeth of the gear 136 merely slippingthrough the teeth of the worm V13,5. Y l

The knife 185 is carried in .an angularly adjustable bracket 1.70. A finger Orlug 188e that projects` from the knife bracket 170 is yieldingly' engaged by a dog 17 through the action of" a spring 189. The spring thus tends to. maintain the lug 188 in engagement with a limiting-,1r stop 190. The position of the stop 19,0 may adjusted by an adjusting screw 191 that is tapped in the head 22 of the-machine and that engages a shoulder 192V of the stop 190. Adjustment of the screw 191 will therefore result in rotatably adjusting the angular position of the knifebracket 170 and the knife 185 that is mounted thereon, the spring 189 acting always to maintain the lug 1884 in engagement with the adjustable stop 190.

The feed .disk 1113 is caused to tilt yieldingly about an axis transverse to the feeddisk shaft, resulting in very sensitive reslponse to abnormal conditions. The feedcisk shaft 137 is rigidly clamped against longitudinal movement by nuts shown at the top of the shaft in Fig` 1, the customary aXially-yielding-permitting spring being omitted. `The nuts permit adjusting the feed-disk shaft longitudinally to adjustthe position of the feed disk. l

The feed disk 143 is mounted at the lower end ofthe feed-diskshaft 137 through the medium of a threadedv screw 144 that is threaded. into a correspondingly threaded boreprovided inthe lower end of the. shaft 1.37. The feed disk isadapted to` tilt or pivot'about the head r18 of the screw 144, in the direction of the arrow, Fig-1, touuirds the knife 185 and away from the feed roll 95. 1n order that this tilting; or pivotal movement .may be as frictionless as possible. the head 18 of the screw 144 is ball-shaped, and the walls of the Chamber 19 within which is confined are shaped to correspond. For convenience of assembly, these walls ure formed at 23 on the feed disk and on sep* arable plates 24e that arejsecured 'to the feed disk, with the ball head 1S between them., by screws 2,9. Lugs 31 projecting from the ball headlS engage the wallsa of suitable recesses in the plates 24 to cause the feed disk to rotate with the vr shaft 137 upon which itis wunted,

A' plunger 33 to engagement with the feed disk 'to oppose yieldingly the tilting movement of the feed disk and to maintain the yfeed disk at right isforced by a springr 37 inangles to its Shaft-- Tliforcef the spring s `37 may be adjusted by acollar l1 that isV threadedly adjustable upon threads 57 that are integrally provided upon the bearing' v140. 'The plunger 33 is mounted in a split collar 142f`that isA clamped tothe lower portion; ofther bearing 1140,5belowthe threads Y 57. A key 145 provided upon the said 10W er portion of the bearing 140 is seated in a permit thefceddislr to tilt.

correspondinggroove .of the .clamp 142 to prevent accidental rotati'onof Ythe clamp 142,v

thus determiningV the point on the feed roll 95 at which the feed disk 143 shall tilt. The clamp 1112 isy slantinglycut away at 221 to `The foregoing` brief description ofthe ma! Achine of the aforementioned application Will 'suflice as a.y settingbfor the features of novelty .thatv are noiv to be explained, andyit will be understood that the said features of f yThe(combined adjustmentis further advanpoint ,Vertical adjustment of "r, L jrlli'ev head l22 ofthe' machine 'taggecushin connection With` the `pivotally `yielding feed disk abovefde'scribed.

H.To the attainment of this end, the feedvdiskbearing-llO i's'pivotedat 223 -to the lower end 225 of a rod 227. .The rod 227 is longitudinallyl adjustable inthe headf22 theframe ofthe machine toperinit verticall zulj'ustnientgof the piyotalqpoint 223. Once adjusted, howevenfthe pivotalpoint 223v fixed. and the bearing 140 ispivotally adi justable, about, this now temporarily fixed the pivotal point' 223 in the longitudinal direction ofthe rod 227 may be effected inniany Ways without departing `from v.the spirit or `scopeof the present invention. According to the preferred construction. rthe upper end oi vthe rod 227 is threaded, as shon'nat ,229, and is jnffovidedA with a nut v2,31 thatengages thel'head`22 `of the machine frame at 233.

Rotation of the nut 231 Willtherefore result in fraising `or loitering the rod 227, accordingto the direction of rrotation of the nut. "A springy 235 that is coiled "abouttlie rod between al projection 237 at the lowe'rfend of .the rrod and the ilixed 4portion 239L of-the head2-201"y the machiner frame taires up the in of` the machine frame.-

frame is protion with :the spring `into the recess; 216.7;

lost` motion and serves kas a. yielding mount-` g vfor the bearing lOfiipfon the head .x22

' thelnittfni269'out'ofthev vided with a lug 241 having a cylindrical recessl243 'in which is disposed acylindrical adjusting gear 245. The cylindrical recess is cut away at 2117 parallel to they axis of the cylinder," and Hthe gearf'245 extends beyond the cut-away portion, into meshin'genoagement with a rack 2&9 that the' feed-dislr-carrying bearing 140. By turningrthe gear. 2115, as by means of a thumbnut 251 that is integral therewith,

is provided upon from theffeed roll 95. and vthe Iknife 185 longitudinally of the feedqroll and the ,l nife and towards and away from the feed.` roll and the knife transverse to feed roll and the knife.r` vDurine thisnioveinent. the teeth of the gears 135 and136 slipQthrough each o .other lWithout",unineshingA y o After the desire l Lpivotal Vadjustment oit the feed dislr 143 has been effected, the'bearing 140 may be fixed in adjusted position' by a clamp Vnut 253,1 flhe clamp nut 253 is threaded upon Vthe threaded endl255 of a rod 257 the other end 359 of which is threaded or otherwise fixed in the lug 241 ofthe `head 22.

The nut 253 engages a Washer 361 that is in@ terposed about the rod 257 between the nut253 and the bearing- 140. The bearing 140 is in this manner caused tofbe clamped toV the'lug 241. Ther-od 257 extendsthrough commu,- nicating' openings 25,9 and 261infthe bearing 11O.y ,The opening` 259 is cylindrical, and the opening`261fis,narronybut elonj gated. `This construction prevents `binding` of the parts during Vthe above-,described pivetalv adjustment! of the r`.bearing 1610.L A spring 263that lis coiled `about the rod 4257 in the opening' 259"bearsagainst the end Wall 265 .of -the opening' 259. and against the Washer `3,61. TheV nuty 253 is therefore adapted'to be tightened in opposition to the force of the spring` 263. "The feed-,dislecan 17j/ing bearinglw maj7V therefore be yieldinglyclamped against' the lugr 241With any desired degree yof tightness.; V

235, the spring' 263 acts to per t the bearing' to, yielding'ly resist shocks, jarsand thelilre iumnthe machinery. ',r vSanneprovision should profe'rably be made for holding"` the adjusting gear-245 in the cylindrical opening 213.]V 'ccord-in'gfto the preferred const nction,l theinne'r-end of the zjldjustiiig gear 2/15 is provided ivith an annular Lrecess 267. A; button A269|' entends Longitudinal ,move

nient of the adjusting gear-2215 istherefore A prevented .'Witlimit, in any. n aysinte'r ,ering with its' rotation. To removeA the adjust#A ing* gear21l5, all that is necessaryisftotake annular reces's`267. .To yfacilitate"'this functic'iiry the button y269 `memset is provided upenn plate 271 that provided with an opening' '273 thrtui'gh ivl'iiclrtherod extends. To remove theplate, all that is necessary is to reniove the' nut and the bearimgl/lO, after which the plate 2?'1 may be slipped ofl` the rod ln practice, when it is desired to take the adjusting gear out o'f its eylindrical recess it sufficient to unelamp the nut suflieiently to make the plate 271 loose.

The description of many portions of the machine an understanding of which not essential to an imderstalading` of the presentinvention has piuposely been emitted, and many parts of the machine have purposely not been illustrated in order not to distract the attention from the feature-sof essential novelty. Fuller explanation of such pertions of the machine will be feund inthe eopendingr application referred to above. lt will' be clear that the features ef novelty may be embodied mother machines, and in machines of other types, and that modifications may be made therein by perso v' in the art, Without departingl from the spirit and scope of the invention, defined inthe appended' claims.

`lVhat isr claimed is:

l. -A machine of theclass described having", in eombinatioma knife, a feed roll and a feed disk 'for feeding mate 'al to the knife, the feed disk seing adjusta ne with a combined longitudinal and' transverse movement in a plane through 'the axis of the feed disk substantially parallel to the axis of the feed rell, and means for adjustingr 'the feed disk with a combined longitudinal and transverse movement in the said plane.

2. A machine of the class described havin cembii'iation, a knife-,a feed roll and a feed disk fer feeding* material tothe knife?, the feed disk being pivotally adjustable in a plane through the axis of the feed disk substantially parallelte the airis of the feed roll, and means for pivotally adjusting the feed disk in the said plane.

3. A machine of the class deserihedhaving, in cou'ibination, a knife, a feed rell and a feed disk for feedingv material to the knife, and-means for adjiiz "it, the feed disk texvards and from the feed roll with a combined n'iovemcnt towards or away from the feed roll longitudinally of the feed roll and ten'ards and away from the feed roll `transverse to feed rell in a plane through the axis of the feed disk substantially parallel to the anis of the feed roll.

al. A machine of the class described havingr, in combination, a knife, a feed roll and a feed disk for feeding.,r material to the knife, the feed disk being adjustable With a eembined longitudinal and transverse movement in a plane through the axis of the feed disk substantially parallel to the axis of the feed roll, mea-ns for adjusting the feed disk with a combined longitudinal and transverse movement in the said plane, and means for clamping the feed disk inr adjusted position.

5. A machine efl the class describedk having, in combination, a knife, a feed roll and a feed disk for feedingr materialto the knife, and means for adjusting the feed disk with a combined lengitudinal and transverse movement, the feed diskhavingr a shaft and being adapted to tilt yieldingly about an i I' transverse' tothe shaft.

6. A skiving` machine having, in combination, a knife for skivisng then'iargin of sheet materiaha feed roll and a feed disk for feeding?rl material te the knife,the feed disi'; having; a shaft, a bearing for the shaft pivetally adjustable in a plane through the axis ef the feed disk sulistantiallj7 parallel to the axis of thev feed roll and means for pivotally adjusting the bearingA in thesaid plane. K i

'7. A ski ving machine having, in combination, a knife for skivingthe margin of sheet i'naterial, a feed roll'and a feed disk for feeding material to the knife, the feed` dish havii'igr a shaft, a. bearing for the shaft having a rack, and a gea-r having teeth meshing with the teeth of the rack.

8. A skivingf machine having, in combination, a knife for skiving the margin of sheet material, a feed roll and a feed' disk fof: feedingr material to the knife, the feed rdisk havingY a shaft, a bearing for the shaft pivotally adjustable in a plane through the axis of the feed disk substantially parallel `to the axis of the feed roll, the bearing having' an opening, means fer pivotally adjnstintthe bearing in the said plane, and means extending through the openingfor clamping the bearing in adjusted position. a

9. A skivin'g; machine having, in combina.- tion, a frame, a. knife for skiving the margin ofy sheet material mounted on the frame, a/'feed roll and a feed disk for feediine` materialte the knife, the feed disk havingr a shaft, a bearing for the shaft, means for adjusting the bearing,xand`means for yieldingly elamjiinethe bearing to the frame.

l0. A skiving machine havingpin combination, a frame, a knife for skiving; the margin of sheet material mounted on the frame, a feed roll and a feed for feeding material to the knife, the feed disk having' shaft, :i bearing forthe shaft, means for the frame, and means for yieldingly clamping the bearing to the frame.

1l. A skiving machine having, in combination, a frame, a knife for skivingl the margin of sheet material mounted on the frame, a feed roll and a feed disk for feeding material to the knife, the feed disk having a shaft, a bearing for rthe shaft, a rod adjustably mounted on the frame to which the bearing is pivot-ed, means for maintainyieldingly mounting the bearingr upoir l lll) ing the rod vieldingly inV adjusted position, means forpivotally adjusting the bearing about the pivotal Lpoint of the rod, and

displacement on the frame and positionto the frame.

means for clamping the bearing in adjusted 12. A' skiving `machine.having7 in combi- `nation, a frame, a knife for skiving the margin of sheet material Amounted .on the frame, a feed roll and a vfeedvdiskil-for feeding material'to the knife, the vfeed disk having a shaft, a bearingl forthe shafthaving a rack,-y

,meshing ivith the teeth ofthe rack` for adan adjusting fgearhaving teeth justingthe bearing, and means for clamping the bearing in adjusted position.

18. A skiving machinefhaving, in'combination, a frame, a knife for skiving the mar-.- gin of sheet material mounted on the frame, a-feed roll-and a feed disk for feeding material tothe knife, the feed disk having a shaft, a. bearing for the shafthaving yagraok,

an 'adjusting gear' mounted on the `frame having yteeth meshing With thev teeth vof the rackzf'or adjusting :the bearing, and means for holding` the geary against longitudinal permitting rotatable adjustment of the gear.

14. A skiving machine having, in combination, a vframe, a knife for vskiving the margin of sheet material mounted `on the frame,

a feed roll anda .feed disk for feeding` -material tov they knife, the feed Ydisk having ,a l

shaft, a'bearingforfthefshaft having a. rack, an adjusting gear mounted on the frame .havino' teeth meshing 'with the teeth of the rack or adjusting the bearing, means for holdinofthe :Oear against klongitudinal dis- C D D DA n. .u y K placement on the frame and permitting rotatable'adjustment of the gear, and Common. means for securing the gear-holding means and Vclamping the bearingY 1n adjusted e posi-` tion.

ljA machine of the Class describedhaving, 1n Combination, a frame, a gearL having an annular recess mounted .on the frame,

i a .plate having :button mounted infjthe recess,vvhe`reby longitudinal movement of the gear is prevented While permitting ro-r` j tary movement of the gear,1a member maintained'in contact With thev plate, and meansy extending through the member and the `platek for securing the plate and clamping the member tothe frame. j f I 16. A skiving-machine having, in combination, a frame having a cylindrical. opening, a knife for skiving'the margin of sheet material mounted on the frame, a feed roll and a feed disk for lfeeding material yto the knife, the `feed disk having a shaft, a bearing f 'or-the'shaftl having a rack, an adjusting gear mounted in the cylindrioal opening having teethmeshing With theteeth of the havin an annular. recess, a button mounted in the recess, whereby longitudinal movement of the gear is prevented While permitting rotary,movementof the Igear, and means for clampingthe bearing inadjusted posi- .tioni and securing/the lbutton in,` the recess.

A'skivingmachine having, iireombid nation, a frame having a cylindrical opening, av knife forskivingthe margin of sheet f ally adjustingthebearing about the pivotaly point of 'the rod, the gear having an annular recess a Aplate -having 'a j button mounted in the recess and'havinganjopening, whereby longitudinal movement ofthe rack foradjusting the bearing, the gearv e gear is prevented While permitting rotary movement ofthe gear, a threadedfrod'extending through` the openings inthe bearing and the plate, a coilspring surrounding the threaded rod, anda `nut threaded upon the threads of the rod and adapted to be tightened in opposition to the force ofthespring for securing ther plate and yieldingly clamping thebearing to the frame.

In testimony whereof, Illiave hereunto subscribed my namev thisQSth day of December, 1923.

ANDREWR. ninDiinsTRoM. 

